1ef5129fde
- Add support for variable width I2S (via XUA_I2S_N_BITS) - Add support for variable width TDM (again via XUD_I2S_N_BITS when XUA_PCM_FORMAT=XUA_PCM_FORMAT_TDM) - Includes support for xcore as I2S/TDM master and slave - Add testing of the the above to test_i2s_loopback - Rationalised test config building in test_i2s_loopback - Documentation updated
238 lines
5.9 KiB
Plaintext
238 lines
5.9 KiB
Plaintext
// Copyright 2016-2023 XMOS LIMITED.
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// This Software is subject to the terms of the XMOS Public Licence: Version 1.
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#include <platform.h>
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#include <stdlib.h>
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#include <print.h>
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#include <timer.h>
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#include "xua.h"
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#define DEBUG_UNIT MAIN
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#include "debug_print.h"
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/* Port declarations. Note, the defines come from the xn file */
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#if I2S_WIRES_DAC > 0
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on tile[AUDIO_IO_TILE] : buffered out port:32 p_i2s_dac[I2S_WIRES_DAC] =
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{PORT_I2S_DAC0,
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#endif
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#if I2S_WIRES_DAC > 1
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PORT_I2S_DAC1,
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#endif
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#if I2S_WIRES_DAC > 2
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PORT_I2S_DAC2,
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#endif
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#if I2S_WIRES_DAC > 3
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PORT_I2S_DAC3,
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#endif
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#if I2S_WIRES_DAC > 4
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PORT_I2S_DAC4,
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#endif
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#if I2S_WIRES_DAC > 5
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PORT_I2S_DAC5,
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#endif
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#if I2S_WIRES_DAC > 6
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PORT_I2S_DAC6,
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#endif
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#if I2S_WIRES_DAC > 7
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#error I2S_WIRES_DAC value is too large!
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#endif
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#if I2S_WIRES_DAC > 0
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};
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#endif
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#if I2S_WIRES_ADC > 0
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on tile[AUDIO_IO_TILE] : buffered in port:32 p_i2s_adc[I2S_WIRES_ADC] =
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{PORT_I2S_ADC0,
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#endif
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#if I2S_WIRES_ADC > 1
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PORT_I2S_ADC1,
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#endif
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#if I2S_WIRES_ADC > 2
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PORT_I2S_ADC2,
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#endif
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#if I2S_WIRES_ADC > 3
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PORT_I2S_ADC3,
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#endif
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#if I2S_WIRES_ADC > 4
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PORT_I2S_ADC4,
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#endif
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#if I2S_WIRES_ADC > 5
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PORT_I2S_ADC5,
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#endif
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#if I2S_WIRES_ADC > 6
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PORT_I2S_ADC6,
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#endif
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#if I2S_WIRES_ADC > 7
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#error I2S_WIRES_ADC value is too large!
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#endif
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#if I2S_WIRES_ADC > 0
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};
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#endif
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#if CODEC_MASTER
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buffered in port:32 p_lrclk = PORT_I2S_LRCLK;
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buffered in port:32 p_bclk = PORT_I2S_BCLK;
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#else
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buffered out port:32 p_lrclk = PORT_I2S_LRCLK; /* I2S Bit-clock */
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buffered out port:32 p_bclk = PORT_I2S_BCLK; /* I2S L/R-clock */
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#endif
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in port p_mclk_in = PORT_MCLK_IN;
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/* Clock-block declarations */
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clock clk_audio_bclk = on tile[AUDIO_IO_TILE]: XS1_CLKBLK_1; /* Bit clock */
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clock clk_audio_mclk = on tile[AUDIO_IO_TILE]: XS1_CLKBLK_2; /* Master clock */
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#ifdef SIMULATION
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#define INITIAL_SKIP_FRAMES 10
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#define TOTAL_TEST_FRAMES 100
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#else
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#define INITIAL_SKIP_FRAMES 1000
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#define TOTAL_TEST_FRAMES (5 * DEFAULT_FREQ)
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#endif
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#define SHIFT (16) /* Note, we shift samples up such that we can test down to 16bit I2S */
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#define SAMPLE(frame_count, channel_num) ((((frame_count) << 8) | ((channel_num) & 0xFF))<<SHIFT)
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#define SAMPLE_FRAME_NUM(test_word) ((test_word>>SHIFT) >> 8)
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#define SAMPLE_CHANNEL_NUM(test_word) ((test_word>>SHIFT) & 0xFF)
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void generator(chanend c_checker, chanend c_out)
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{
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unsigned frame_count;
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int underflow_word;
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int fail;
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int i;
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frame_count = 0;
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while (1) {
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underflow_word = inuint(c_out);
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#pragma loop unroll
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for (i = 0; i < NUM_USB_CHAN_OUT; i++) {
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outuint(c_out, SAMPLE(frame_count, i));
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}
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fail = inuint(c_checker);
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#pragma loop unroll
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for (i = 0; i < NUM_USB_CHAN_IN; i++) {
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outuint(c_checker, inuint(c_out));
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}
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if (frame_count == TOTAL_TEST_FRAMES) {
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if (!fail) {
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debug_printf("PASS\n");
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}
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outct(c_out, AUDIO_STOP_FOR_DFU);
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//inuint(c_out); //This causes the DFUhandler to be called with exceptiopn in slave mode so skip this - we are out of here anyhow
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exit(0);
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}
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frame_count++;
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}
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}
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void checker(chanend c_checker, int disable)
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{
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unsigned x[NUM_USB_CHAN_IN];
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int last_frame_number;
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unsigned frame_count;
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int fail;
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int i;
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if (disable)
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debug_printf("checker disabled\n");
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/*debug_printf("%s %d/%d %d\n",
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I2S_MODE_TDM ? "TDM" : "I2S", NUM_USB_CHAN_IN, NUM_USB_CHAN_OUT, DEFAULT_FREQ);*/
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fail = 0;
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frame_count = 0;
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last_frame_number = -1;
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while (1) {
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outuint(c_checker, fail);
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#pragma loop unroll
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for (i = 0; i < NUM_USB_CHAN_IN; i++) {
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x[i] = inuint(c_checker);
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}
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if (frame_count > INITIAL_SKIP_FRAMES) {
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// check that frame number is incrementing
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if (!disable && SAMPLE_FRAME_NUM(x[0]) != last_frame_number + 1) {
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debug_printf("%d: 0x%x (%d)\n", frame_count, x[0], last_frame_number);
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fail = 1;
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}
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for (i = 0; i < NUM_USB_CHAN_IN; i++) {
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// check channel numbers are 0 to N-1 in a frame
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if (!disable && SAMPLE_CHANNEL_NUM(x[i]) != i) {
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debug_printf("%d,%d: 0x%x\n", frame_count, i, x[i]);
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fail = 1;
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}
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// check frame number doesn't change in a frame
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if (!disable && SAMPLE_FRAME_NUM(x[i]) != SAMPLE_FRAME_NUM(x[0])) {
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debug_printf("%d,%d: 0x%x (0x%x)\n", frame_count, i, x[i], x[0]);
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fail = 1;
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}
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}
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}
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last_frame_number = SAMPLE_FRAME_NUM(x[0]);
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frame_count++;
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}
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}
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#ifdef SIMULATION
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out port p_mclk_gen = on tile[AUDIO_IO_TILE] : XS1_PORT_1A;
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clock clk_audio_mclk_gen = on tile[AUDIO_IO_TILE] : XS1_CLKBLK_3;
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void master_mode_clk_setup(void);
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#if CODEC_MASTER
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out port p_bclk_gen = on tile[AUDIO_IO_TILE] : XS1_PORT_1B;
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clock clk_audio_bclk_gen = on tile[AUDIO_IO_TILE] : XS1_CLKBLK_4;
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out port p_lrclk_gen = on tile[AUDIO_IO_TILE] : XS1_PORT_1C;
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clock clk_audio_lrclk_gen = on tile[AUDIO_IO_TILE] : XS1_CLKBLK_5;
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void slave_mode_clk_setup(const unsigned samFreq, const unsigned chans_per_frame);
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#endif
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#endif
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#if (XUA_PCM_FORMAT == XUA_PCM_FORMAT_TDM)
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const int i2s_tdm_mode = 8;
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#else
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const int i2s_tdm_mode = 2;
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#endif
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int main(void)
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{
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chan c_checker;
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chan c_out;
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par
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{
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on tile[AUDIO_IO_TILE]:
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{
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par
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{
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XUA_AudioHub(c_out, clk_audio_mclk, clk_audio_bclk, p_mclk_in, p_lrclk, p_bclk, p_i2s_dac, p_i2s_adc);
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generator(c_checker, c_out);
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checker(c_checker, 0);
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#ifdef SIMULATION
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#if CODEC_MASTER
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slave_mode_clk_setup(DEFAULT_FREQ, i2s_tdm_mode);
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#else
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master_mode_clk_setup();
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#endif
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#endif
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}
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}
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}
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return 0;
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}
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